APA Edition Citation

Lechmann, D. R., Steckel, J. H., & Sunil Gupta. (1997). Marketing research.

Chicago Edition Citation

Lechmann, Donald R., Joel H. Steckel, and Sunil Gupta. Marketing Research. New York, Longman, 1997.

MLA Edition Citation

Lechmann, Donald R., et al. Marketing Research. 1997.